#ifndef GLU_HPP
#  define GLU_HPP
#  ifdef WIN32
#   include <windows.h>
#   ifdef USE_GLU_MOD
#     include "glu.h"
#   else
#     include <GL/glu.h>
#   endif
#  else
#    include <GL/gl.h>
#   ifdef USE_GLU_MOD
#     include "glu.h"
#   else
#     include <GL/glu.h>
#   endif
#  endif
#endif